US5654501A - Engine controller with air meter compensation - Google Patents

Engine controller with air meter compensation Download PDF

Info

Publication number
US5654501A
US5654501A US08/643,976 US64397696A US5654501A US 5654501 A US5654501 A US 5654501A US 64397696 A US64397696 A US 64397696A US 5654501 A US5654501 A US 5654501A
Authority
US
United States
Prior art keywords
value
air
pressure
mass
engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/643,976
Other languages
English (en)
Inventor
Jessy W. Grizzle
Jeffrey Arthur Cook
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Global Technologies LLC
Original Assignee
Ford Motor Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Motor Co filed Critical Ford Motor Co
Priority to US08/643,976 priority Critical patent/US5654501A/en
Assigned to FORD GLOBAL TECHNOLOGIES, INC. reassignment FORD GLOBAL TECHNOLOGIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FORD MOTOR COMPANY
Application granted granted Critical
Publication of US5654501A publication Critical patent/US5654501A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/32—Controlling fuel injection of the low pressure type

Definitions

  • This invention relates to the field of electronic engine control and more particularly to techniques for compensating for dynamic characteristics of an air flow meter in an internal combustion engine.
  • A/F control generally consists of two components: a feedback portion in which a signal related to A/F from an exhaust gas oxygen (EGO) sensor is fed back through a digital controller to regulate the fuel injection pulse width, and a feed forward portion in which injector fuel flow is controlled in response to a signal from an air flow meter.
  • EGO exhaust gas oxygen
  • the open-loop, or feed forward portion of the control system is particularly important when the engine is cold (before the closed-loop A/F control is operational) and during transient operation when inherent delays in the closed-loop A/F feedback system inhibits good control.
  • the signal from the air flow meter is used to generate an estimate of instantaneous manifold pressure. This estimate along with engine speed and, potentially, other engine variables, such as EGR, vapor purge, etc., defines the flow rate of air into the engine cylinders from the manifold.
  • cylinder air charge is determined by integrating the cylinder flow rate of air over the time required for the engine to complete one intake stroke. The cylinder air charge divided by the stoichiometric A/F ratio is the amount of fuel required for operation at stoichiometry and is used to calculate the appropriate injector pulse width.
  • the inventors herein have recognized two deficiencies with the conventional scheme.
  • the signal from the air meter does not respond instantaneously to changes in air flow.
  • the conventional method of calculating manifold pressure and thus cylinder air charge on the basis of this uncorrected signal under estimates the amount of air in the intake manifold when the true air flow increases, and over estimates it in the case of a decrease in true air flow.
  • known methods of accounting for air meter dynamics require differentiating the electronic signal from the air meter. This approach results in undesirable noise amplification.
  • an electronic engine controller employs a means which is responsive to a signal from an air meter positioned to be exposed to air entering an intake manifold of an engine.
  • the air meter generates a measured air flow value which is indicative of the mass flow rate of air entering the intake manifold.
  • a base pressure value which is indicative of an air pressure in the intake manifold which corresponds to the measured air flow value is generated as a function of the measured air flow value.
  • a pressure correction value is generated as a function of the measured air flow value, a prior measured air flow value, and a prior pressure correction value; the pressure correction value being indicative of dynamic response of the air meter.
  • a total pressure value which is indicative of the total pressure in the intake manifold is generated as a function of a base pressure value and the pressure correction value.
  • a cylinder air charge value, which is indicative of air charge in cylinders of the engine is then generated as a function of the total pressure value, the rotational speed of the engine and a sampling interval which is indicative of a rate at which the measured air flow value is generated.
  • a mass charge estimate is utilized instead of a pressure charge estimate, as represented by the total pressure value, described above.
  • An advantage of certain preferred embodiments is that an accurate air charge estimate is generated which takes the dynamic characteristics of the air meter into account. Air-fuel control is thus improved.
  • An additional advantage is that only a single measurement device, such as the air meter, is utilized to provide the accurate air charge estimate. A throttle position sensor or a manifold pressure sensor is not required. Hence, cost is decreased and reliability is improved.
  • the air charge estimate is generated without explicitly differentiating the signal generated by the air meter. Thus noise which may exist in the air meter signal is not amplified as a result of differentiation of the signal.
  • FIG. 1 of the drawings shows a schematic diagram of a preferred embodiment of portions of an internal combustion engine and an electronic engine controller which utilizes the principles of the invention
  • FIGS. 2 and 3 are flowcharts showing the operation of preferred embodiments
  • FIGS. 4 is a graph showing the relationship between different variables in a preferred embodiment.
  • FIG. 5 is a schematic diagram showing a preferred implementation of a function within the electronic engine controller of FIG. 1.
  • FIG. 1 of the drawings shows an Electronic Engine Controller (EEC) 10 and an internal combustion engine 100.
  • Engine 100 draws an aircharge through an intake manifold 101, past a throttle plate 102, an intake valve 103 and into combustion chamber 104.
  • An air/fuel mixture which consists of the aircharge and fuel, is ignited in combustion chamber 104, and exhaust gas produced from combustion of the air/fuel mixture is transported past exhaust valve 105 through exhaust manifold 106.
  • a piston 107 is coupled to a crankshaft 108, and moves in a reciprocating fashion within a cylinder defined by cylinder walls 110.
  • a crankshaft position sensor 115 detects the rotation of crankshaft 108 and transmits a crankshaft position signal 116 to EEC 10.
  • Crankshaft position signal 116 preferably takes the form of a series of pulses, each pulse being caused by the rotation of a predetermined point on the crankshaft past sensor 115. The frequency of pulses on the crankshaft position signal 116 are thus indicative of the rotational speed of the engine crankshaft.
  • a Mass AirFlow (MAF) sensor 117 detects the mass flow rate of air into intake manifold 101 and transmits a representative air meter signal 118 to EEC 10.
  • MAF sensor 117 preferably takes the form of a hot wire air meter.
  • a Heated Exhaust Gas Oxygen (HEGO) sensor 119 detects the concentration of oxygen in exhaust gas produced by the engine and transmits an exhaust gas composition signal 120 to EEC 10 which is indicative of the composition of the exhaust gas.
  • a throttle position sensor 121 detects the angular position of throttle plate 102 and transmits a representative signal 122 to EEC 10. Throttle position sensor 121 preferably takes the form of a rotary potentiometer.
  • An engine coolant temperature sensor 123 detects the temperature of engine coolant circulating within the engine and transmits an engine coolant temperature signal 124 to EEC 10.
  • Engine coolant temperature sensor 123 preferably takes the form of a thermocouple.
  • Injector actuators 140 operate in response to fuel injector signal 142 to deliver an amount of fuel determined by fuel injector signal 142 to combustion chambers 104 of the engine.
  • EEC 10 includes a central processing unit (CPU) 21 for executing stored control programs, a random-access memory (RAM) 22 for temporary data storage, a read-only memory (ROM) 23 for storing the control programs, a keep-alive-memory (KAM) 24 for storing learned values, a conventional data bus, and I/O ports 25 for transmitting and receiving signals to and from the engine 100 and other systems in the vehicle.
  • CPU central processing unit
  • RAM random-access memory
  • ROM read-only memory
  • KAM keep-alive-memory
  • I/O ports 25 for transmitting and receiving signals to and from the engine 100 and other systems in the vehicle.
  • FIGS. 2 and 3 are flowcharts showing the steps executed by a preferred embodiment to implement two alternative methods for compensating for dynamic characteristics of air meter 117.
  • the steps shown in FIGS. 2 and 3 are preferably implemented as programs stored in ROM 23 and executed by CPU 21 as a part of an interrupt driven routine during all phases of engine operation. Alternatively, the steps shown in FIGS. 2 and 3 may only be executed during certain phases of engine operation, particularly during transient operation where deficiencies in the dynamic characteristics of the air meter 117 may be most prevalent.
  • FIG. 2 shows the steps executed to implement a preferred pressure correction routine in which a correction term is utilized to correct a calculated manifold pressure to account for additional manifold pressure due to air which has entered the intake manifold, contributing to its total pressure, but which is not reflected in the air meter signal 118 as a result of dynamic delays in the air meter 117.
  • the pressure correction routine is entered at 201 and at step 202 a base manifold pressure value, designated herein as "x" is initialized.
  • a routine identification value, designated herein as k, is also initialized at 202.
  • the routine identification value k is utilized to indicate the relative point in time at which values are generated by the pressure correction routine.
  • Step 202 is preferably executed once each time the engine is started. Consequently, depending upon storage capacity of the EEC 10, values generated upon numerous executions of the pressure correction routine may be stored and uniquely identified.
  • the air meter signal 118 is sampled and stored as a value, designated herein as a Mass AirFlow (MAF) value, in memory.
  • a Mass AirFlow (MAF) value Preferably a plurality of MAF values, representing sensed mass air flow rates at different points in time are maintained in memory.
  • each of the stored MAF values is designated with a subscript to differentiate the relative point in time indicated by each of the values.
  • the value MAF k contains a value indicative of the air flow rate sampled on the current execution of the pressure correction routine
  • the value MAF k-1 contains a value indicative of the air flow rate sampled on the prior execution of the pressure correction routine.
  • a pressure correction value ⁇ P k which is indicative of a pressure correction required to compensate for dynamic characteristics of the air meter 117 is determined.
  • the base manifold pressure value x indicates an air pressure corresponding to the mass flow rate of air past air meter 117.
  • the pressure correction value advantageously compensates for errors introduced into generation of the base mass air flow value by the dynamics of the air meter. For example, rapid changes in the air flow rate may be detected with varying degrees of accuracy depending upon the type of air meter used. In addition, heat transfer between the air meter and the air flowing past the meter may also affect the accuracy of the air flow meter output.
  • the pressure correction value ⁇ P k is preferably determined in accordance with the relationship shown in equation (2). ##EQU1## where, ⁇ P is as described above,
  • R is the universal gas constant
  • T is the temperature of the air in the intake manifold
  • V m is the volume of the intake manifold
  • MAF a is the actual mass air flow through the intake manifold
  • ⁇ is the time constant of the air meter.
  • Generation of the pressure correction term ⁇ P in accordance with the relationship expressed in equation (2) may preferably be performed either by accessing a look-up table stored in memory which contains a plurality of pressure correction terms indexed by the current MAF value (MAF k ) and the prior mass air flow (MAF k-1 ), or may preferably be performed by performing a series of calculations which approximates the relation expressed in equation (2). If a look-up table is utilized, the table may take a variable number of dimensions depending upon how the air meter response is modelled.
  • the pressure correction term may take the following general form:
  • MAF k and MAF k-j+1 are the MAF values obtained upon different executions of the pressure correction routine
  • P k-1 and P k-r are the total pressure values obtained upon different executions of the pressure correction routine.
  • the base manifold pressure x k is generated as a function of the MAF value by integrating the mass air flow signal and applying the ideal gas law.
  • a total pressure value, designated herein as P k is then generated by adding the current base manifold pressure x k to the pressure correction term ⁇ P k .
  • the value of the base manifold pressure is initialized at step 201.
  • An appropriate initial value is preferably an estimate of the atmospheric pressure.
  • Subsequent values of the base pressure will be determined in step 209.
  • the total pressure value P k is indicative of air pressure in the intake manifold. This value advantageously takes into account the dynamic characteristics of the air meter.
  • a cylinder air charge value designated herein as CAC k , which is indicative of air charge in cylinders of the engine is determined in accordance with sampling interval value ⁇ T k and a pumping flow function, designated below as Cyl(N k , P k ). Specifically, the cylinder air charge value is determined according to the relationship expressed below:
  • ⁇ k is the interval of time elapsed between the sampling of the current MAF value and the sampling of the prior MAF value
  • P k is the total pressure value
  • an updated value of the base manifold pressure is determined for use in the subsequent execution of the pressure correction routine.
  • the updated value is preferably generated according to the following relationship: ##EQU2## where, x k+1 is the updated value of the base manifold pressure,
  • x k is the present value of the base manifold pressure
  • V is the volume of the intake manifold
  • Cyl(N k , P k ) is as described above.
  • routine identification value k is updated and the EEC performs other engine control functions including determination of an amount of fuel to be injected in accordance with the cylinder air charge determined at step 208.
  • pressure correction routine is subsequently executed, the execution begins at step 203, unless the engine is turned off, in which case execution begins at step 201.
  • Steps 301-305 of FIG. 3 are identical to steps 201-205, and the description accompanying steps 201-205 should be considered to apply to steps 301-305.
  • a mass correction value designated herein as ⁇ M k , which is indicative of the additional mass of air which has entered the intake manifold, but which has not yet been reflected in signal 118 due to the dynamic characteristics of the air meter, is determined. If the air meter is described by a first order linear differential equation, such as that shown in equation (1) above, then the mass correction value ⁇ M k is preferably determined in accordance with the relationship shown in equation (6) below:
  • a total mass value designated herein as M tb ,k, indicative of the total mass in the intake manifold, is generated by adding the mass correction value to an observed mass charge value as shown in equation (7) below:
  • ⁇ t k MAF k is the observed mass charge value which is indicative of mass charge at any given point in the intake manifold.
  • a base mass air charge value is determined as a function of air temperature in the intake manifold (T k ), the interval of time elapsed between the sampling of the current MAF value and the sampling of the prior MAF value ( ⁇ t k ), the rotational speed of the engine (N k ), and the cylinder air charge as calculated on the previous execution of the routine (CAC k-1 ), as seen in equation (8) below:
  • equation (8) may take a form as shown below: ##EQU3## where, b(N k ) is the partial derivative of the mass flow rate of air into the cylinder with respect to manifold pressure.
  • FIG. 4 of the drawings is a graph showing sample values for the pressure correction value plotted as a function of measured mass air flow rate for a preferred air meter. If lookup table(s) is/are employed to generate the pressure correction term, the values for the table(s) may be generated to match empirical observations of the response of the air meter to be used.
  • FIG. 5 of the drawings shows a preferred implementation of a multi-dimensional lookup table for storage of the pressure correction terms. In FIG. 5, the current MAF value MAF k and the prior MAF value MAF k-1 are used as index values to retrieve a first intermediate pressure correction term from a first table 501.
  • the first intermediate pressure correction term is then used in conjunction with the MAF value generated two routines previously (MAF k-2 ) to retrieve a second intermediate pressure correction term from a second table 502.
  • this procedure can be performed using only one table, or a number of tables in order to generate the pressure correction term ⁇ P k .
  • Known interpolation techniques may be employed to generate a pressure correction term where no corresponding term is stored for the particular index values used for the table.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Details Of Flowmeters (AREA)
US08/643,976 1995-03-30 1996-05-07 Engine controller with air meter compensation Expired - Fee Related US5654501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US08/643,976 US5654501A (en) 1995-03-30 1996-05-07 Engine controller with air meter compensation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41332395A 1995-03-30 1995-03-30
US08/643,976 US5654501A (en) 1995-03-30 1996-05-07 Engine controller with air meter compensation

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US41332395A Continuation 1995-03-30 1995-03-30

Publications (1)

Publication Number Publication Date
US5654501A true US5654501A (en) 1997-08-05

Family

ID=23636805

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/643,976 Expired - Fee Related US5654501A (en) 1995-03-30 1996-05-07 Engine controller with air meter compensation

Country Status (3)

Country Link
US (1) US5654501A (de)
EP (1) EP0735261A3 (de)
JP (1) JPH08270492A (de)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6170475B1 (en) 1999-03-01 2001-01-09 Ford Global Technologies, Inc. Method and system for determining cylinder air charge for future engine events
US6219611B1 (en) * 1999-10-18 2001-04-17 Ford Global Technologies, Inc. Control method for engine having multiple control devices
US6257214B1 (en) 2000-02-03 2001-07-10 Ford Global Technologies, Inc. Exhaust gas recirculation monitor
US6286366B1 (en) * 1998-11-11 2001-09-11 Chrysler Corporation Method of determining the engine charge temperature for fuel and spark control of an internal combustion engine
US6298299B1 (en) * 1996-06-03 2001-10-02 Nissan Motor Co., Ltd. Control apparatus for internal combustion engine and estimation apparatus for estimating pressure in intake and discharge system of internal combustion engine
US6311679B1 (en) 2000-05-02 2001-11-06 Ford Global Technologies, Inc. System and method of controlling air-charge in direct injection lean-burn engines
US6357430B1 (en) * 2000-03-21 2002-03-19 Ford Global Technologies, Inc. Method and system for calculating engine load ratio during rapid throttle changes
US6460409B1 (en) 2000-05-13 2002-10-08 Ford Global Technologies, Inc. Feed-forward observer-based control for estimating cylinder air charge
US6467442B2 (en) 1999-10-18 2002-10-22 Ford Global Technologies, Inc. Direct injection variable valve timing engine control system and method
US6490643B2 (en) 1999-10-18 2002-12-03 Ford Global Technologies, Inc. Control method for a vehicle having an engine
US6560527B1 (en) 1999-10-18 2003-05-06 Ford Global Technologies, Inc. Speed control method
US20030105575A1 (en) * 2001-12-05 2003-06-05 Visteon Global Technologies, Inc. Method for estimating engine cylinder variables using second order sliding modes
US20030106524A1 (en) * 2001-12-06 2003-06-12 Glugla Christopher Paul Intake manifold pressure control for variable displacement engines
US6634328B2 (en) 1999-10-18 2003-10-21 Ford Global Technologies, Llc Engine method
US6694960B2 (en) * 2000-02-11 2004-02-24 Robert Bosch Gmbh Method and arrangement for determining cylinder-individual differences of a control variable in a multi-cylinder internal combustion engine
US6701895B1 (en) 2003-02-26 2004-03-09 Ford Global Technologies, Llc Cylinder event based spark
US20040084015A1 (en) * 2002-11-05 2004-05-06 Jing Sun System and method for estimating and controlling cylinder air charge in a direct injection internal combustion engine
US6755182B1 (en) * 2003-04-16 2004-06-29 Ford Global Technologies, Llc Adaptive control for engine with electronically adjustable valve operation
US6761153B1 (en) 2003-02-26 2004-07-13 Ford Global Technologies, Llc Engine air amount prediction based on a change in speed
US20040163624A1 (en) * 2003-02-26 2004-08-26 Meyer Garth Michael Synchronized cylinder event based spark
US6796292B2 (en) 2003-02-26 2004-09-28 Ford Global Technologies, Llc Engine air amount prediction based on engine position
US6931840B2 (en) 2003-02-26 2005-08-23 Ford Global Technologies, Llc Cylinder event based fuel control
US7080630B1 (en) * 2005-05-17 2006-07-25 Gm Global Technology Operations, Inc. Method for calculating cylinder charge during starting
US20060173607A1 (en) * 2003-03-03 2006-08-03 Noritaka Matsuo Engine suction air flow rate measuring device
US7320308B1 (en) * 2006-12-05 2008-01-22 Delphi Technologies, Inc. Method of cylinder pressure sensor data/angle capture for low and high resolution
US20080021629A1 (en) * 2001-12-18 2008-01-24 Ford Global Technologies, Llc Vehicle Control System
US7367316B2 (en) 1999-10-18 2008-05-06 Ford Global Technologies, Llc Vehicle control system
US20090275440A1 (en) * 2006-03-07 2009-11-05 Ford Global Technologies, Llc Vehicle response during vehicle acceleration conditions
US8090598B2 (en) 1996-01-29 2012-01-03 Progressive Casualty Insurance Company Monitoring system for determining and communicating a cost of insurance
US8140358B1 (en) 1996-01-29 2012-03-20 Progressive Casualty Insurance Company Vehicle monitoring system
DE102014204624A1 (de) 2013-03-15 2014-09-18 Ford Global Technologies, Llc Intrusiver egr-monitor für ein hybridfahrzeug
US11030702B1 (en) 2012-02-02 2021-06-08 Progressive Casualty Insurance Company Mobile insurance platform system
US20220112851A1 (en) * 2020-10-08 2022-04-14 Ford Global Technologies, Llc System and method for diagnosing cylinder deactivation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2329040B (en) * 1996-06-03 1999-08-18 Nissan Motor Apparatus for estimating pressure in intake system and exhaust system of internal combustion engine
GB2516657A (en) * 2013-07-29 2015-02-04 Gm Global Tech Operations Inc A control apparatus for operating a fuel metering valve

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125015A (en) * 1977-05-10 1978-11-14 Fiat Societa Per Azioni Process and device for determining the quantity of air inducted by an internal combustion engine
US4403505A (en) * 1980-11-07 1983-09-13 Nippon Soken, Inc. Ignition range detector for internal combustion engine
US4644784A (en) * 1984-11-29 1987-02-24 Toyota Jidosha Kabushiki Kaisha Suction pipe pressure detection apparatus
US4761994A (en) * 1986-05-06 1988-08-09 Fuji Jukogyo Kabushiki Kaisha System for measuring quantity of intake air in an engine
US4836015A (en) * 1988-06-14 1989-06-06 General Motors Corporation Method and apparatus for determining the compression ratio of an engine cylinder
US4913118A (en) * 1988-04-01 1990-04-03 Fuji Jukogyo Kabushiki Kaisha Fuel injection control system for an automotive engine
US5008824A (en) * 1989-06-19 1991-04-16 Ford Motor Company Hybrid air charge calculation system
US5270935A (en) * 1990-11-26 1993-12-14 General Motors Corporation Engine with prediction/estimation air flow determination
US5359883A (en) * 1993-08-16 1994-11-01 Caterpillar Inc. Apparatus and method for analyzing events for an internal combustion engine
US5398544A (en) * 1993-12-23 1995-03-21 Ford Motor Company Method and system for determining cylinder air charge for variable displacement internal combustion engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2830265B2 (ja) * 1990-01-11 1998-12-02 株式会社日立製作所 気筒流入空気量算出装置
US5497329A (en) * 1992-09-23 1996-03-05 General Motors Corporation Prediction method for engine mass air flow per cylinder
US5331936A (en) * 1993-02-10 1994-07-26 Ford Motor Company Method and apparatus for inferring the actual air charge in an internal combustion engine during transient conditions

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125015A (en) * 1977-05-10 1978-11-14 Fiat Societa Per Azioni Process and device for determining the quantity of air inducted by an internal combustion engine
US4403505A (en) * 1980-11-07 1983-09-13 Nippon Soken, Inc. Ignition range detector for internal combustion engine
US4644784A (en) * 1984-11-29 1987-02-24 Toyota Jidosha Kabushiki Kaisha Suction pipe pressure detection apparatus
US4761994A (en) * 1986-05-06 1988-08-09 Fuji Jukogyo Kabushiki Kaisha System for measuring quantity of intake air in an engine
US4913118A (en) * 1988-04-01 1990-04-03 Fuji Jukogyo Kabushiki Kaisha Fuel injection control system for an automotive engine
US4836015A (en) * 1988-06-14 1989-06-06 General Motors Corporation Method and apparatus for determining the compression ratio of an engine cylinder
US5008824A (en) * 1989-06-19 1991-04-16 Ford Motor Company Hybrid air charge calculation system
US5270935A (en) * 1990-11-26 1993-12-14 General Motors Corporation Engine with prediction/estimation air flow determination
US5359883A (en) * 1993-08-16 1994-11-01 Caterpillar Inc. Apparatus and method for analyzing events for an internal combustion engine
US5398544A (en) * 1993-12-23 1995-03-21 Ford Motor Company Method and system for determining cylinder air charge for variable displacement internal combustion engine

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
B.K. Powell and J.A. Cook, "Nonlinear Low Frequency Phenomenological Engine Modeling and Analysis", Proc. 1987 Amer. Contr. Conf., vol. 1, pp. 332-340, Jun. 1987.
B.K. Powell and J.A. Cook, Nonlinear Low Frequency Phenomenological Engine Modeling and Analysis , Proc. 1987 Amer. Contr. Conf ., vol. 1, pp. 332 340, Jun. 1987. *
P.E. Moral., J.W. Grizzle and J.A. Cook, "An Observer Design for Single-Sensor Individual Cylinder Pressure Control", Proceedings of the IEEE Conference on Decision and Control, San Antonio, Dec., 1993, pp. 2922-2961.
P.E. Moral., J.W. Grizzle and J.A. Cook, An Observer Design for Single Sensor Individual Cylinder Pressure Control , Proceedings of the IEEE Conference on Decision and Control , San Antonio, Dec., 1993, pp. 2922 2961. *

Cited By (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9754424B2 (en) 1996-01-29 2017-09-05 Progressive Casualty Insurance Company Vehicle monitoring system
US8090598B2 (en) 1996-01-29 2012-01-03 Progressive Casualty Insurance Company Monitoring system for determining and communicating a cost of insurance
US8140358B1 (en) 1996-01-29 2012-03-20 Progressive Casualty Insurance Company Vehicle monitoring system
US8311858B2 (en) 1996-01-29 2012-11-13 Progressive Casualty Insurance Company Vehicle monitoring system
US8595034B2 (en) 1996-01-29 2013-11-26 Progressive Casualty Insurance Company Monitoring system for determining and communicating a cost of insurance
US8892451B2 (en) 1996-01-29 2014-11-18 Progressive Casualty Insurance Company Vehicle monitoring system
US6298299B1 (en) * 1996-06-03 2001-10-02 Nissan Motor Co., Ltd. Control apparatus for internal combustion engine and estimation apparatus for estimating pressure in intake and discharge system of internal combustion engine
US6286366B1 (en) * 1998-11-11 2001-09-11 Chrysler Corporation Method of determining the engine charge temperature for fuel and spark control of an internal combustion engine
US6170475B1 (en) 1999-03-01 2001-01-09 Ford Global Technologies, Inc. Method and system for determining cylinder air charge for future engine events
US7290527B2 (en) 1999-07-14 2007-11-06 Ford Global Technologies Llc Vehicle control system
US8371264B2 (en) 1999-07-14 2013-02-12 Ford Global Technologies, Llc Vehicle control system
US8671909B2 (en) 1999-07-14 2014-03-18 Ford Global Technologies, Llc Vehicle control system
US6560527B1 (en) 1999-10-18 2003-05-06 Ford Global Technologies, Inc. Speed control method
US7367316B2 (en) 1999-10-18 2008-05-06 Ford Global Technologies, Llc Vehicle control system
US6626147B2 (en) 1999-10-18 2003-09-30 Ford Global Technologies, Llc Control method for a vehicle having an engine
US6634328B2 (en) 1999-10-18 2003-10-21 Ford Global Technologies, Llc Engine method
US7117847B2 (en) 1999-10-18 2006-10-10 Ford Global Technologies, Llc Vehicle control system
US6651620B2 (en) 1999-10-18 2003-11-25 Ford Global Technologies, Llc Engine method
US6978764B1 (en) 1999-10-18 2005-12-27 Ford Global Technologies, Inc. Control method for a vehicle having an engine
US6219611B1 (en) * 1999-10-18 2001-04-17 Ford Global Technologies, Inc. Control method for engine having multiple control devices
US6705284B2 (en) 1999-10-18 2004-03-16 Ford Global Technologies, Llc Engine method
US6962139B2 (en) 1999-10-18 2005-11-08 Ford Global Technologies, Llc Speed control method
US6712041B1 (en) 1999-10-18 2004-03-30 Ford Global Technologies, Inc. Engine method
US6945225B2 (en) 1999-10-18 2005-09-20 Ford Global Technologies, Llc Speed control method
US7000588B2 (en) 1999-10-18 2006-02-21 Ford Global Technologies, Llc Engine method
US6945227B2 (en) 1999-10-18 2005-09-20 Ford Global Technologies, Llc Direct injection variable valve timing engine control system and method
US6490643B2 (en) 1999-10-18 2002-12-03 Ford Global Technologies, Inc. Control method for a vehicle having an engine
US20040154587A1 (en) * 1999-10-18 2004-08-12 Russell John David Vehicle control system
US6467442B2 (en) 1999-10-18 2002-10-22 Ford Global Technologies, Inc. Direct injection variable valve timing engine control system and method
US20040168672A1 (en) * 1999-10-18 2004-09-02 Russell John David Speed control method
US20040182376A1 (en) * 1999-10-18 2004-09-23 Russell John David Engine method
US20080208436A1 (en) * 1999-10-18 2008-08-28 Ford Global Technologies, Llc Vehicle Control System
US7703439B2 (en) 1999-10-18 2010-04-27 Ford Global Technologies, Llc Vehicle control system
US6257214B1 (en) 2000-02-03 2001-07-10 Ford Global Technologies, Inc. Exhaust gas recirculation monitor
US6694960B2 (en) * 2000-02-11 2004-02-24 Robert Bosch Gmbh Method and arrangement for determining cylinder-individual differences of a control variable in a multi-cylinder internal combustion engine
US6357430B1 (en) * 2000-03-21 2002-03-19 Ford Global Technologies, Inc. Method and system for calculating engine load ratio during rapid throttle changes
US6311679B1 (en) 2000-05-02 2001-11-06 Ford Global Technologies, Inc. System and method of controlling air-charge in direct injection lean-burn engines
US6460409B1 (en) 2000-05-13 2002-10-08 Ford Global Technologies, Inc. Feed-forward observer-based control for estimating cylinder air charge
US20030005756A1 (en) * 2000-05-13 2003-01-09 Soliman Ihab S. Feed-forward observer-based control for estimating cylinder air charge
US6718822B2 (en) * 2000-05-13 2004-04-13 Ford Global Technologies, Llc Feed-forward observer-based control for estimating cylinder air charge
US6640622B2 (en) * 2000-05-13 2003-11-04 Ford Global Technologies, Llc Feed-forward observer-based control for estimating cylinder air charge
US6711489B2 (en) * 2001-12-05 2004-03-23 Visteon Global Technologies, Inc. Method for estimating engine cylinder variables using second order sliding modes
US20030105575A1 (en) * 2001-12-05 2003-06-05 Visteon Global Technologies, Inc. Method for estimating engine cylinder variables using second order sliding modes
US6817336B2 (en) 2001-12-06 2004-11-16 Ford Global Technologies, Llc Intake manifold pressure control for variable displacement engines
US20030106524A1 (en) * 2001-12-06 2003-06-12 Glugla Christopher Paul Intake manifold pressure control for variable displacement engines
US20080021629A1 (en) * 2001-12-18 2008-01-24 Ford Global Technologies, Llc Vehicle Control System
US7398762B2 (en) 2001-12-18 2008-07-15 Ford Global Technologies, Llc Vehicle control system
US8251044B2 (en) 2001-12-18 2012-08-28 Ford Global Technologies, Llc Vehicle control system
US20100204906A1 (en) * 2001-12-18 2010-08-12 Ford Global Technologies, Llc Vehicle Control System
US20040084015A1 (en) * 2002-11-05 2004-05-06 Jing Sun System and method for estimating and controlling cylinder air charge in a direct injection internal combustion engine
US6805095B2 (en) * 2002-11-05 2004-10-19 Ford Global Technologies, Llc System and method for estimating and controlling cylinder air charge in a direct injection internal combustion engine
US6931840B2 (en) 2003-02-26 2005-08-23 Ford Global Technologies, Llc Cylinder event based fuel control
US20040200458A1 (en) * 2003-02-26 2004-10-14 Lewis Donald James Engine air amount prediction based on engine position
US6761153B1 (en) 2003-02-26 2004-07-13 Ford Global Technologies, Llc Engine air amount prediction based on a change in speed
US6895932B2 (en) * 2003-02-26 2005-05-24 Ford Global Technologies, Llc Synchronized cylinder event based spark
US6978761B2 (en) 2003-02-26 2005-12-27 Ford Global Technologies, Llc Cylinder event based spark
US20040226283A1 (en) * 2003-02-26 2004-11-18 Meyer Garth Michael Cylinder event based spark
US6701895B1 (en) 2003-02-26 2004-03-09 Ford Global Technologies, Llc Cylinder event based spark
US20040163624A1 (en) * 2003-02-26 2004-08-26 Meyer Garth Michael Synchronized cylinder event based spark
US6796292B2 (en) 2003-02-26 2004-09-28 Ford Global Technologies, Llc Engine air amount prediction based on engine position
US6990960B2 (en) 2003-02-26 2006-01-31 Ford Global Technologies, Llc Engine air amount prediction based on engine position
US20060173607A1 (en) * 2003-03-03 2006-08-03 Noritaka Matsuo Engine suction air flow rate measuring device
US7204134B2 (en) * 2003-03-03 2007-04-17 Noritaka Matsuo Engine suction air flow rate measuring device
US6755182B1 (en) * 2003-04-16 2004-06-29 Ford Global Technologies, Llc Adaptive control for engine with electronically adjustable valve operation
US7219004B2 (en) 2003-04-16 2007-05-15 Ford Global Technologies, Llc Adaptive control for engine with electronically adjustable valve operation
US20040216718A1 (en) * 2003-04-16 2004-11-04 Kolmanovsky Ilya V. Adaptive control for engine with electronically adjustable valve operation
US7080630B1 (en) * 2005-05-17 2006-07-25 Gm Global Technology Operations, Inc. Method for calculating cylinder charge during starting
US20090275440A1 (en) * 2006-03-07 2009-11-05 Ford Global Technologies, Llc Vehicle response during vehicle acceleration conditions
US8239113B2 (en) * 2006-03-07 2012-08-07 Ford Global Technologies, Llc Vehicle response during vehicle acceleration conditions
US7320308B1 (en) * 2006-12-05 2008-01-22 Delphi Technologies, Inc. Method of cylinder pressure sensor data/angle capture for low and high resolution
US11030702B1 (en) 2012-02-02 2021-06-08 Progressive Casualty Insurance Company Mobile insurance platform system
DE102014204624A1 (de) 2013-03-15 2014-09-18 Ford Global Technologies, Llc Intrusiver egr-monitor für ein hybridfahrzeug
US20220112851A1 (en) * 2020-10-08 2022-04-14 Ford Global Technologies, Llc System and method for diagnosing cylinder deactivation
US11378028B2 (en) * 2020-10-08 2022-07-05 Ford Global Technologies, Llc System and method for diagnosing cylinder deactivation

Also Published As

Publication number Publication date
EP0735261A3 (de) 1999-04-07
JPH08270492A (ja) 1996-10-15
EP0735261A2 (de) 1996-10-02

Similar Documents

Publication Publication Date Title
US5654501A (en) Engine controller with air meter compensation
US4789939A (en) Adaptive air fuel control using hydrocarbon variability feedback
US5524598A (en) Method for detecting and controlling air-fuel ratio in internal combustion engine
JP2973418B2 (ja) 内燃機関の吸気管圧力検出方法
US4467770A (en) Method and apparatus for controlling the air-fuel ratio in an internal combustion engine
US6282485B1 (en) Air estimation system and method
US6561016B1 (en) Method and apparatus for determining the air charge mass for an internal combustion engine
US6453229B1 (en) Air-fuel ratio control device for internal combustion engine and method thereof
US5809969A (en) Method for processing crankshaft speed fluctuations for control applications
JPH033054B2 (de)
US5611315A (en) Fuel supply amount control apparatus for internal combustion engine
US4911133A (en) Fuel injection control system of automotive engine
US5068794A (en) System and method for computing asynchronous interrupted fuel injection quantity for automobile engines
US5628299A (en) Air/fuel control system with lost fuel compensation
US7542841B2 (en) Method and device for controlling an internal combustion engine
US5569847A (en) Air-fuel ratio estimator for internal combustion engine
JP3449813B2 (ja) 内燃機関における大気圧推定装置
JPH01237333A (ja) 内燃機関の制御装置
US5228336A (en) Engine intake air volume detection apparatus
JP2007120392A (ja) 内燃機関の空燃比制御装置
US5016595A (en) Air-fuel ratio control device for internal combustion engine
JPH09287507A (ja) 内燃機関のスロットル弁制御装置
US5762054A (en) Ego based adaptive transient fuel compensation for a spark ignited engine
US4901699A (en) System for controlling a fuel injection quantity and method therefor
US4662339A (en) Air-fuel ratio control for internal combustion engine

Legal Events

Date Code Title Description
AS Assignment

Owner name: FORD GLOBAL TECHNOLOGIES, INC., MICHIGAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FORD MOTOR COMPANY;REEL/FRAME:008564/0053

Effective date: 19970430

FPAY Fee payment

Year of fee payment: 4

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20050805